Who owns MAC prefix 70B3D5693?

70B3D5693 is registered to Altron, a.s. in the IEEE MA-S registry.

What devices use 70B3D5693?

Any network device with a MAC address starting 70:B3:D5:69:3 was manufactured by or for Altron, a.s..

MA-S · OUI prefix

Altron, a.s.

Any MAC address starting 70:B3:D5:69:3 is registered to Altron, a.s. in CZ.

OUI prefix	70B3D5693
Vendor	Altron, a.s.
Registry	MA-S (36-bit, small block)
Country	CZ
Example MAC	70:B3:D5:69:3:00:00:00

What this means

The IEEE assigned the MA-S block 70B3D5693 to Altron, a.s.. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 70:B3:D5:69:3, it is Altron, a.s. hardware.

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